Plz help quickly

 15' 3" - 5' 6

Note    15' 3"    is the same as    14'  + 1'  +  3"  =  14'  +  12" + 3"   =   14' 15"

So

     14 ft       15 in

-      5 ft         6in

-------------------------

       9ft       9in

What is sqrt3(sqrt3(csc(cosh(sqrt3(sqrt(sec(csc(sqrt3(sqrt3(549)5586^3)68255)6)265414256+553)55^3))))^3452^34524)

if you can get you just saved my life literally😉🤓